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The temperature of the ideal emitter that matches the color most closely is defined as the color temperature of the original visible light source. The color temperature scale describes only the color of light emitted by a light source, which may actually be at a different (and often much lower) temperature. [1] [2]
warm white fluorescent ... 6350 daylight fluorescent F6 0.37790: 0.38835 0.38660: 0.37847 4150 light white fluorescent F7 0.31292: 0.32933 ... Color temperature white ...
Color temperature (K) N/A 29 WW Warm white ≈52 3000 WW 35 W White ≈56 3500 W 33 CW Cool White ≈62 4000-4300 N/A 25 N/A Neutral/Universal White ≈75 4000 N N/A N/A Natural Daylight ≈70 5000 D 54 D Daylight ≈75 6500 Deluxe halophosphate tubes Japanese color code Numeric color code Alphabetic color code Color Approximate CRI Color ...
[3] [4] [5] In practice, light sources that approximate Planckian radiators, such as certain fluorescent or high-intensity discharge lamps, are assessed based on their CCT, which is the temperature of a Planckian radiator whose color most closely resembles that of the light source. For light sources that do not follow the Planckian distribution ...
CIE (2007) "reviews the applicability of the CIE color rendering index to white LED light sources based on the results of visual experiments". Chaired by Davis, CIE TC 1-69(C) is currently investigating "new methods for assessing the color rendition properties of white-light sources used for illumination, including solid-state light sources ...
Color temperatures and example sources Temperature Source 1700 K Match flame, low pressure sodium lamps (LPS/SOX) 1850 K Candle flame, sunset/sunrise: 2400 K Standard incandescent lamps: 2550 K Soft white incandescent lamps 2700 K "Soft white" compact fluorescent and LED lamps 3000 K Warm white compact fluorescent and LED lamps 3200 K
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